Give scientific reasons: Whittaker placed fungi in a separate Kingdom Fungi,distinct from the Kingdom Plantae in his classification system.

(N/A) $1$. Fungi lack chlorophyll,meaning they cannot perform photosynthesis and thus cannot produce their own food. They are heterotrophic,obtaining nutrients as saprophytes or parasites.
$2$. The cell wall of fungi is composed of chitin,whereas the cell wall of plants is composed of cellulose.
$3$. Fungi store food in the form of glycogen and oil droplets,unlike plants which store food primarily as starch.
Due to these fundamental differences in nutrition,cell wall composition,and food storage,fungi were separated from the Kingdom Plantae and placed into a distinct Kingdom Fungi.